Casper, WY
Local storm history & FEMA National Risk Index data
Casper is rated Relatively Low for overall natural hazard risk — lower risk than most US counties — based on FEMA's National Risk Index for Natrona County, WY. The county's highest-rated hazards are winter weather, wildfire, and landslide.
Storm events near Casper
NOAA-recorded tornado, hail, and flood events within 25 miles of Casper's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Casper itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Natrona County's FEMA National Risk Index scores, covering Casper along with the rest of the county, not a Casper-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 93 | Relatively Moderate |
| Inland Flooding | 74.7 | Relatively Moderate |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 82.8 | Relatively Low |
| Heat Wave | 17.2 | Very Low |
| Tornado | 36.9 | Relatively Low |
| Avalanche | 81.6 | Relatively Moderate |
| Cold Wave | 82.5 | Relatively Moderate |
| Drought | 21 | Very Low |
| Hail | 41.1 | Relatively Low |
| Hurricane | — | Not Applicable |
| Ice Storm | 41.7 | Relatively Low |
| Landslide | 91.7 | Relatively Moderate |
| Lightning | 67.3 | Relatively Moderate |
| Strong Wind | 5.6 | Very Low |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 97.1 | Very High |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Natrona County risk profile for disaster declarations, social vulnerability, and climate projection data.
More on Natrona County:
Frequently asked questions
What natural hazards is Casper, WY at risk of?
Casper is rated Relatively Low for overall natural hazard risk by FEMA's National Risk Index — lower risk than most US counties. The highest-rated hazards for Natrona County, where Casper is located, are winter weather, wildfire, and landslide.
What is Casper's biggest natural hazard risk?
Winter Weather is the highest-rated hazard for Natrona County, where Casper is located, scoring 97.1 out of 100 on FEMA's National Risk Index (rated "Very High").
Is Casper a high-risk area for natural disasters?
No — Casper carries lower risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Low" for Natrona County.
Has Casper had tornadoes, hail, or flooding?
NOAA has recorded 3 tornado, 29 hail, 3 inland flooding events within 25 miles of Casper since 2016.